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###                                                                        ###
###        Electronic paper (Acta Crystallographica Section E)             ###
###                                                                        ###
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#                                                                            #
# This CIF contains the data in a paper accepted for publication in Acta     #
# Crystallographica Section E. It conforms to the requirements of Notes      #
# for Authors for Section E, and has been peer reviewed under the auspices   #
# of the IUCr Commission on Journals.                                        #
#                                                                            #
# Full details of the Crystallographic Information File format               #
# are given in the paper "The Crystallographic Information File (CIF):       #
# a New Standard Archive File for Crystallography" by S. R. Hall, F. H.      #
# Allen and I. D. Brown [Acta Cryst. (1991), A47, 655-685].                  #
#                                                                            #
# The current version of the core CIF dictionary is obtainable from          #
# ftp://ftp.iucr.org/pub/cif_core.dic. The current version number is 2.4.    #
#                                                                            #
# Software is freely available for graphical display of the structure(s) in  #
# this CIF.  For information consult the CIF home page http://www.iucr.org/  #
# cif/home.html                                                              #
#                                                                            #
# This file may be used for bona fide research purposes within the           #
# scientific community so long as proper attribution is given to the journal # 
# article from which it was obtained.                                        #
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##############################################################################
                                             
data_I
_audit_creation_method     SHELXL-97
_chemical_name_systematic
;
1,1',2,2'-Tetramethyl-3,3'-(p-phenylenedimethylene)diimidazol-1-ium
bis(trifluoromethanesulfonate)
;
_chemical_name_common     ?
_chemical_formula_moiety     'C18 H24 N4 2+, 2(C F3 O3 S -)'
_chemical_formula_sum     'C20 H24 F6 N4 O6 S2'
_chemical_formula_iupac     'C18 H24 N4 2+, 2C F3 O3 S -'
_chemical_formula_weight     594.55
_chemical_melting_point     ?
_symmetry_cell_setting     triclinic
_symmetry_space_group_name_H-M     'P -1'
_symmetry_space_group_name_Hall     '-P 1'
loop_
    _symmetry_equiv_pos_as_xyz
    'x, y, z'
    '-x, -y, -z'
_cell_length_a     7.30540(10)
_cell_length_b     8.0645(2)
_cell_length_c     11.3548(2)
_cell_angle_alpha     89.9460(10)
_cell_angle_beta     76.6530(10)
_cell_angle_gamma     75.2130(10)
_cell_volume     628.14(2)
_cell_formula_units_Z     1
_cell_measurement_reflns_used     1992
_cell_measurement_theta_min     2.62
_cell_measurement_theta_max     28.98
_cell_measurement_temperature     100(2)
_exptl_crystal_description     plate
_exptl_crystal_colour     colourless
_exptl_crystal_size_max     0.31
_exptl_crystal_size_mid     0.19
_exptl_crystal_size_min     0.04
_exptl_crystal_density_diffrn     1.572
_exptl_crystal_density_meas     ?
_exptl_crystal_density_method     'not measured'
_exptl_crystal_F_000     306
_exptl_absorpt_coefficient_mu     0.301
_exptl_absorpt_correction_type     multi-scan
_exptl_absorpt_process_details     '(SADABS; Sheldrick, 1996)'
_exptl_absorpt_correction_T_min     0.9124
_exptl_absorpt_correction_T_max     0.9881
_exptl_special_details
;
;
_diffrn_ambient_temperature     100(2)
_diffrn_radiation_type     MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_source     'fine-focus sealed tube'
_diffrn_radiation_monochromator     graphite
_diffrn_measurement_device_type     'Bruker APEXII CCD'
_diffrn_measurement_method     'φ and ω scans'
_diffrn_detector_area_resol_mean     ?
_diffrn_reflns_number     5105
_diffrn_reflns_av_R_equivalents     0.0214
_diffrn_reflns_av_sigmaI/netI     0.0318
_diffrn_reflns_theta_min     1.85
_diffrn_reflns_theta_max     25.25
_diffrn_reflns_theta_full     25.25
_diffrn_measured_fraction_theta_max     0.995
_diffrn_measured_fraction_theta_full     0.995
_diffrn_reflns_limit_h_min     -8
_diffrn_reflns_limit_h_max     8
_diffrn_reflns_limit_k_min     -9
_diffrn_reflns_limit_k_max     9
_diffrn_reflns_limit_l_min     -13
_diffrn_reflns_limit_l_max     13
_diffrn_standards_number     0
_diffrn_standards_interval_count     ?
_diffrn_standards_interval_time     ?
_diffrn_standards_decay_%     ?
_refine_special_details
;
Refinement of F² against ALL reflections. The weighted R-factor
wR and goodness of fit S are based on F², conventional
R-factors R are based on F, with F set to zero for
negative F². The threshold expression of F² >
σ(F²) is used only for calculating R-factors(gt) etc.
and is not relevant to the choice of reflections for refinement.
R-factors based on F² are statistically about twice as large
as those based on F, and R- factors based on ALL data will be
even larger.
;
_reflns_number_total     2273
_reflns_number_gt     1982
_reflns_threshold_expression     I>2sigma(I)
_refine_ls_structure_factor_coef     Fsqd
_refine_ls_matrix_type     full
_refine_ls_R_factor_all     0.0487
_refine_ls_R_factor_gt     0.0415
_refine_ls_wR_factor_gt     0.0990
_refine_ls_wR_factor_ref     0.1025
_refine_ls_goodness_of_fit_ref     1.163
_refine_ls_restrained_S_all     1.163
_refine_ls_number_reflns     2273
_refine_ls_number_parameters     174
_refine_ls_number_restraints     0
_refine_ls_hydrogen_treatment     constr
_refine_ls_weighting_scheme     calc
_refine_ls_weighting_details
         'calc w=1/[σ²(Fo²)+(0.0241P)²+1.0056P] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_hydrogens     geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary     difmap
_refine_ls_shift/su_max     0.000
_refine_ls_shift/su_mean     0.000
_refine_diff_density_max     0.325
_refine_diff_density_min     -0.367
_refine_ls_extinction_method     none
_refine_ls_extinction_coef     ?
loop_
    _atom_type_symbol
    _atom_type_description
    _atom_type_scat_dispersion_real
    _atom_type_scat_dispersion_imag
    _atom_type_scat_source
    'C' 'C' 0.0033 0.0016
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
    'H' 'H' 0.0000 0.0000
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
    'N' 'N' 0.0061 0.0033
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
    'O' 'O' 0.0106 0.0060
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
    'F' 'F' 0.0171 0.0103
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
    'S' 'S' 0.1246 0.1234
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
_computing_data_collection     'APEX2 (Bruker, 2008)'
_computing_cell_refinement     'SAINT (Bruker, 2008)'
_computing_data_reduction     'SAINT (Bruker, 2008)'
_computing_structure_solution     'SHELXS97 (Sheldrick, 2008)'
_computing_structure_refinement     'SHELXL97 (Sheldrick, 2008)'
_computing_molecular_graphics     'X-SEED (Barbour, 2001)'
_computing_publication_material     'publCIF (Westrip, 2010)'
loop_
    _atom_site_type_symbol
    _atom_site_label
    _atom_site_fract_x
    _atom_site_fract_y
    _atom_site_fract_z
    _atom_site_U_iso_or_equiv
    _atom_site_adp_type
    _atom_site_calc_flag
    _atom_site_refinement_flags
    _atom_site_occupancy
    _atom_site_disorder_assembly
    _atom_site_disorder_group
    N N1 0.1441(3) 0.2762(3) 0.18655(19) 0.0160(5) Uani d . 1 . .
    N N2 0.3402(3) 0.2113(3) 0.30441(19) 0.0154(5) Uani d . 1 . .
    C C1 -0.0172(4) 0.3018(3) 0.4080(2) 0.0184(6) Uani d . 1 . .
    H H1A -0.1168 0.4026 0.3949 0.028 Uiso calc R 1 . .
    H H1B 0.0251 0.3241 0.4810 0.028 Uiso calc R 1 . .
    H H1C -0.0718 0.2022 0.4184 0.028 Uiso calc R 1 . .
    C C2 0.1513(4) 0.2664(3) 0.3023(2) 0.0153(5) Uani d . 1 . .
    C C3 -0.0369(4) 0.3301(4) 0.1445(3) 0.0214(6) Uani d . 1 . .
    H H3A -0.1169 0.2498 0.1703 0.032 Uiso calc R 1 . .
    H H3B -0.0050 0.3304 0.0558 0.032 Uiso calc R 1 . .
    H H3C -0.1093 0.4459 0.1793 0.032 Uiso calc R 1 . .
    C C4 0.3304(4) 0.2260(3) 0.1129(2) 0.0192(6) Uani d . 1 . .
    H H4 0.3651 0.2214 0.0268 0.023 Uiso calc R 1 . .
    C C5 0.4525(4) 0.1851(3) 0.1863(2) 0.0191(6) Uani d . 1 . .
    H H5 0.5906 0.1454 0.1620 0.023 Uiso calc R 1 . .
    C C6 0.4164(4) 0.1924(3) 0.4137(2) 0.0165(6) Uani d . 1 . .
    H H6A 0.5389 0.0992 0.3970 0.020 Uiso calc R 1 . .
    H H6B 0.3214 0.1575 0.4796 0.020 Uiso calc R 1 . .
    C C7 0.4564(3) 0.3550(3) 0.4568(2) 0.0144(5) Uani d . 1 . .
    C C8 0.4553(4) 0.4977(3) 0.3878(2) 0.0166(6) Uani d . 1 . .
    H H8 0.4247 0.4974 0.3109 0.020 Uiso calc R 1 . .
    C C9 0.5011(4) 0.3589(3) 0.5692(2) 0.0155(5) Uani d . 1 . .
    H H9 0.5018 0.2624 0.6173 0.019 Uiso calc R 1 . .
    S S1 1.07181(10) 0.18928(9) 0.76648(6) 0.01802(18) Uani d . 1 . .
    F F1 0.7150(2) 0.1636(2) 0.78601(16) 0.0331(4) Uani d . 1 . .
    F F2 0.7393(2) 0.3543(2) 0.91048(16) 0.0334(4) Uani d . 1 . .
    F F3 0.8292(2) 0.0858(2) 0.94182(14) 0.0272(4) Uani d . 1 . .
    O O1 1.0372(3) 0.3265(3) 0.68688(17) 0.0283(5) Uani d . 1 . .
    O O2 1.1362(3) 0.0188(3) 0.70802(19) 0.0332(5) Uani d . 1 . .
    O O3 1.1741(3) 0.2164(3) 0.85592(18) 0.0262(5) Uani d . 1 . .
    C C10 0.8268(4) 0.1991(3) 0.8556(2) 0.0204(6) Uani d . 1 . .
loop_
    _atom_site_aniso_label
    _atom_site_aniso_U_11
    _atom_site_aniso_U_22
    _atom_site_aniso_U_33
    _atom_site_aniso_U_12
    _atom_site_aniso_U_13
    _atom_site_aniso_U_23
    N1 0.0189(12) 0.0156(11) 0.0150(11) -0.0052(9) -0.0060(9) -0.0006(9)
    N2 0.0154(11) 0.0174(12) 0.0136(11) -0.0046(9) -0.0035(9) 0.0001(9)
    C1 0.0180(14) 0.0191(14) 0.0177(13) -0.0044(11) -0.0039(11) 0.0009(11)
    C2 0.0188(13) 0.0130(13) 0.0162(13) -0.0063(11) -0.0059(11) 0.0002(10)
    C3 0.0221(15) 0.0233(15) 0.0215(14) -0.0053(12) -0.0111(12) 0.0003(11)
    C4 0.0247(15) 0.0190(14) 0.0136(13) -0.0081(12) -0.0009(11) -0.0017(10)
    C5 0.0173(14) 0.0215(14) 0.0174(14) -0.0062(11) -0.0007(11) -0.0032(11)
    C6 0.0160(13) 0.0192(14) 0.0157(13) -0.0050(11) -0.0060(10) 0.0020(10)
    C7 0.0073(12) 0.0192(13) 0.0151(13) -0.0022(10) -0.0011(10) -0.0011(10)
    C8 0.0150(13) 0.0227(14) 0.0123(12) -0.0038(11) -0.0047(10) 0.0009(10)
    C9 0.0131(13) 0.0171(13) 0.0155(13) -0.0022(10) -0.0041(10) 0.0029(10)
    S1 0.0180(4) 0.0213(4) 0.0143(3) -0.0061(3) -0.0019(3) -0.0007(3)
    F1 0.0283(10) 0.0448(11) 0.0367(10) -0.0189(8) -0.0182(8) 0.0115(8)
    F2 0.0254(9) 0.0241(9) 0.0409(11) 0.0004(7) 0.0038(8) -0.0048(8)
    F3 0.0329(10) 0.0300(9) 0.0213(9) -0.0150(8) -0.0044(7) 0.0088(7)
    O1 0.0382(12) 0.0340(12) 0.0190(10) -0.0182(10) -0.0098(9) 0.0098(9)
    O2 0.0293(12) 0.0287(12) 0.0355(13) -0.0059(9) 0.0024(10) -0.0137(10)
    O3 0.0222(11) 0.0357(12) 0.0227(11) -0.0089(9) -0.0081(8) 0.0034(9)
    C10 0.0216(15) 0.0187(14) 0.0209(14) -0.0047(11) -0.0060(12) 0.0023(11)
_geom_special_details
;
All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes)
are estimated using the full covariance matrix. The cell e.s.d.'s are taken
into account individually in the estimation of e.s.d.'s in distances, angles
and torsion angles; correlations between e.s.d.'s in cell parameters are only
used when they are defined by crystal symmetry. An approximate (isotropic)
treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s.
planes.
;
loop_
    _geom_bond_atom_site_label_1
    _geom_bond_atom_site_label_2
    _geom_bond_site_symmetry_2
    _geom_bond_distance
    _geom_bond_publ_flag
    N1 C2 . 1.329(3) ?
    N1 C4 . 1.382(3) ?
    N1 C3 . 1.471(3) ?
    N2 C2 . 1.343(3) ?
    N2 C5 . 1.386(3) ?
    N2 C6 . 1.466(3) ?
    C1 C2 . 1.475(4) ?
    C1 H1A . 0.9800 ?
    C1 H1B . 0.9800 ?
    C1 H1C . 0.9800 ?
    C3 H3A . 0.9800 ?
    C3 H3B . 0.9800 ?
    C3 H3C . 0.9800 ?
    C4 C5 . 1.339(4) ?
    C4 H4 . 0.9500 ?
    C5 H5 . 0.9500 ?
    C6 C7 . 1.520(4) ?
    C6 H6A . 0.9900 ?
    C6 H6B . 0.9900 ?
    C7 C9 . 1.390(4) ?
    C7 C8 . 1.391(4) ?
    C8 C9 2_666 1.392(4) ?
    C8 H8 . 0.9500 ?
    C9 C8 2_666 1.392(4) ?
    C9 H9 . 0.9500 ?
    S1 O1 . 1.438(2) ?
    S1 O3 . 1.439(2) ?
    S1 O2 . 1.442(2) ?
    S1 C10 . 1.824(3) ?
    F1 C10 . 1.338(3) ?
    F2 C10 . 1.331(3) ?
    F3 C10 . 1.338(3) ?
loop_
    _geom_angle_atom_site_label_1
    _geom_angle_atom_site_label_2
    _geom_angle_atom_site_label_3
    _geom_angle_site_symmetry_1
    _geom_angle_site_symmetry_3
    _geom_angle
    _geom_angle_publ_flag
    C2 N1 C4 . . 109.9(2) ?
    C2 N1 C3 . . 124.5(2) ?
    C4 N1 C3 . . 125.6(2) ?
    C2 N2 C5 . . 109.0(2) ?
    C2 N2 C6 . . 125.6(2) ?
    C5 N2 C6 . . 125.3(2) ?
    C2 C1 H1A . . 109.5 ?
    C2 C1 H1B . . 109.5 ?
    H1A C1 H1B . . 109.5 ?
    C2 C1 H1C . . 109.5 ?
    H1A C1 H1C . . 109.5 ?
    H1B C1 H1C . . 109.5 ?
    N1 C2 N2 . . 107.0(2) ?
    N1 C2 C1 . . 126.3(2) ?
    N2 C2 C1 . . 126.6(2) ?
    N1 C3 H3A . . 109.5 ?
    N1 C3 H3B . . 109.5 ?
    H3A C3 H3B . . 109.5 ?
    N1 C3 H3C . . 109.5 ?
    H3A C3 H3C . . 109.5 ?
    H3B C3 H3C . . 109.5 ?
    C5 C4 N1 . . 106.8(2) ?
    C5 C4 H4 . . 126.6 ?
    N1 C4 H4 . . 126.6 ?
    C4 C5 N2 . . 107.3(2) ?
    C4 C5 H5 . . 126.4 ?
    N2 C5 H5 . . 126.4 ?
    N2 C6 C7 . . 113.6(2) ?
    N2 C6 H6A . . 108.8 ?
    C7 C6 H6A . . 108.8 ?
    N2 C6 H6B . . 108.8 ?
    C7 C6 H6B . . 108.8 ?
    H6A C6 H6B . . 107.7 ?
    C9 C7 C8 . . 118.8(2) ?
    C9 C7 C6 . . 118.2(2) ?
    C8 C7 C6 . . 123.0(2) ?
    C7 C8 C9 . 2_666 120.3(2) ?
    C7 C8 H8 . . 119.8 ?
    C9 C8 H8 2_666 . 119.8 ?
    C7 C9 C8 . 2_666 120.9(2) ?
    C7 C9 H9 . . 119.5 ?
    C8 C9 H9 2_666 . 119.5 ?
    O1 S1 O3 . . 115.23(12) ?
    O1 S1 O2 . . 115.05(13) ?
    O3 S1 O2 . . 114.61(13) ?
    O1 S1 C10 . . 102.57(13) ?
    O3 S1 C10 . . 103.71(12) ?
    O2 S1 C10 . . 103.25(13) ?
    F2 C10 F3 . . 107.4(2) ?
    F2 C10 F1 . . 107.8(2) ?
    F3 C10 F1 . . 107.1(2) ?
    F2 C10 S1 . . 111.33(19) ?
    F3 C10 S1 . . 111.72(19) ?
    F1 C10 S1 . . 111.34(19) ?
loop_
    _geom_hbond_atom_site_label_D
    _geom_hbond_atom_site_label_H
    _geom_hbond_atom_site_label_A
    _geom_hbond_site_symmetry_A
    _geom_hbond_distance_DH
    _geom_hbond_distance_HA
    _geom_hbond_distance_DA
    _geom_hbond_angle_DHA
    C6 H6A O2 2_756 0.99 2.35 3.251(3) 151.6
    C3 H3A O2 2_656 0.98 2.59 3.424(4) 143.6
    C1 H1C O2 2_656 0.98 2.49 3.296(3) 139.2
    C1 H1B O1 1_455 0.98 2.36 3.293(3) 158.8
    C1 H1A O1 2_666 0.98 2.52 3.164(3) 122.8
data_global
_journal_date_recd_electronic     2010-08-16
_journal_date_accepted     2010-08-19
_journal_name_full     'Acta Crystallographica, Section E'
_journal_year     2010
_journal_volume     66
_journal_issue      9
_journal_page_first     o2455
_journal_page_last     o2455
_journal_paper_category     QO
_journal_coeditor_code     HG2702
_publ_contact_author_name     'Puvaneswary Subramaniam'
_publ_contact_author_address
;
Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
;
_publ_contact_author_email     'puvanes5881@yahoo.com'
_publ_contact_author_fax     '603-79677188'
_publ_contact_author_phone     '603-79676774'
_publ_section_title
;
1,1',2,2'-Tetramethyl-3,3'-(p-phenylenedimethylene)diimidazol-1-ium
bis(trifluoromethanesulfonate)
;
loop_
    _publ_author_name
    _publ_author_footnote
    _publ_author_address
    'Subramaniam, Puvaneswary' ?
;
Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
;
    'Alias, Yatimah' .
;
Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
;
    'Chandrasekaram, Kumuthini' .
;
Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
;
